Finding the Fourth Proportional to 156,288.99, 215,678.99 and 84,668.39
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Solution
The fourth proportional to 156,288.99, 215,678.99 and 84,668.39 is: 116,842.47
Step by Step Solution
- Step 1: Write the proportion equation
156,288.99 : 215,678.99 = 84,668.39 : x - Step 2: Convert to fraction form
156,288.99/215,678.99 = 84,668.39/x - Step 3: Cross multiply
156,288.99x = 215,678.99 × 84,668.39 - Step 4: Simplify right side
156,288.99x = 18,261,191,338.39 - Step 5: Solve for x
x = 18,261,191,338.39/156,288.99 - Step 6: Final answer
x = 116,842.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.